A Secure Private Information Retrieval in Cloud Environment

Private information retrieval is an important application of homomorphic encryption. As a hot topic in recent years, homomorphic encryption scheme can operate on the ciphertext and the decryption result is equal to the same operation on the plaintext. Trivial PIR protocol faces the plaintext retriev...

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Bibliographic Details
Published in2016 International Conference on Intelligent Networking and Collaborative Systems (INCoS) pp. 388 - 391
Main Authors Yang HaiBin, Zhang Ling
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2016
Subjects
Cloud computing
Encryption
homomorphic encryption
Information retrieval
Servers
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Summary:Private information retrieval is an important application of homomorphic encryption. As a hot topic in recent years, homomorphic encryption scheme can operate on the ciphertext and the decryption result is equal to the same operation on the plaintext. Trivial PIR protocol faces the plaintext retrieval, so it could not guarantee the database privacy. In the cloud environment, it is unsafe to store the plaintext in the server. In order to settle the above problem, based on a somewhat homomorphic encryption scheme, we design a multi-server PIR. It can not only achieves the privacy and resisting the colluding attack, but also reaches the information-theoretic security.
DOI:10.1109/INCoS.2016.85